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47LLC OPERATING MANUAL EM-9505-B Rev.4
IMPORTANT
•
When indication ‘S.ERR’ and ‘Min’ indicator blink, all the low alarm outputs are provided. When indication ‘S.ERR’ and
‘Max’ indicator blink, all the high alarm outputs are provided.
•
When indication ‘-19999’ blinks, all the low alarm outputs are provided. When ‘19999’ blinks, all the high alarm outputs
are provided.
•
The deadband and ON delay time are reset to the default values when the alarm point has been changed. The current
setpoints are held when quad alarm is changed to dual alarm. The current L and H setpoints are held but the LL and
HH setpoints are returned to the previously set values when dual alarm is changed to quad alarm. However when a
current setpoint is ‘----’, it is returned to the previous one in any case.
NOTE
•
Alarm Setting Mode is locked with the alarm output code ‘0’ no-alarm-output type.
•
Alarm point is fixed at ‘2’ when the alarm output code ‘2’ is specified.
Figure 5: Coil at alarm
■
Alarm Output Code ‘1’ (N.O. relay contact, 4 points) and
‘3’ (photo MOSFET relay, 4 points)
■
Alarm Output Code ‘2’ (SPDT relay contact, 2 points)
In order to stop operation of equipment when the display
value exceeds the setpoint, for instance, set reversal output
logic (N.C.), “coil de-energized”.
Display value
Alarm setpoint
Alarm output
(coil energized)
Alarm output
(coil de-energized)
In order to provide an alarm output at power OFF and at
alarm, set “coil de-energized” and use the N.C. terminal.
Alarm setpoint
Display value
Alarm output
(coil energized)
(N.O.)
(N.C.)
Alarm output
(coil de-energized)
(N.O.)
(N.C.)
Power